In an arithmetic sequence, where a1 = 7 and the common difference is 5 ,find s7

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In an arithmetic sequence, where a1 = 7 and the common difference is 5 ,find s7: S^7 = ( 7/2} (2*7+5(7-1); S^7 = 154.

Expert answered|emdjay23|Points 203633|

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Asked 10/26/2020 7:50:22 PM

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